Stabilization of the low temperature coefficient of dielectric constant ofCa5Nb2TiO12 by Zr doping

Authors
Cava, RJ Krajewski, JJ
Citation
Rj. Cava et Jj. Krajewski, Stabilization of the low temperature coefficient of dielectric constant ofCa5Nb2TiO12 by Zr doping, MATER RES B, 34(12-13), 1999, pp. 1817-1824
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS RESEARCH BULLETIN
ISSN journal
00255408 → ACNP
Volume
34
Issue
12-13
Year of publication
1999
Pages
1817 - 1824
Database
ISI
SICI code
0025-5408(199909/10)34:12-13<1817:SOTLTC>2.0.ZU;2-
Abstract
The effects of small amounts of Zr substitution for Ti in the low loss, low temperature coefficient dielectric material Ca5Nb2TiO12 are reported. Subs titutions at the 1-5% level significantly increase the range of possible fi ring temperatures at which polycrystalline ceramics with low temperature co efficients can be obtained. This low temperature coefficient state is at th e borderline between ordered and disordered states of the Ca, Nb, and Ti io ns in the B sites of the perovskite lattice. The kinetics for ordering is a pparently enhanced by the Zr substitutions. (C) 2000 Elsevier Science Ltd.